<template>
	<div class="popup-result" style="padding:20rpx; margin: 2px auto;">
		<p class="title" style="font-size:30rpx">{{$tt('cron.result.893023-0')}}</p>
		<ul class="popup-result-scroll" style="padding:10rpx 30rpx">
			<template v-if='isShow'>
				<li v-for='item in resultList' :key="item">{{ item }}</li>
			</template>
			<li v-else>{{$tt('cron.result.893023-1')}}</li>
		</ul>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				dayRule: '',
				dayRuleSup: '',
				dateArr: [],
				resultList: [],
				isShow: false
			}
		},
		name: 'crontab-result',
		watch: {
			'ex': 'expressionChange'
		},
		props: ['ex'],
		mounted: function() {
			// 初始化 获取一次结果
			this.expressionChange();
		},
		methods: {
			// 表达式值变化时，开始去计算结果
			expressionChange() {
				// 计算开始-隐藏结果
				this.isShow = false;
				// 获取规则数组[0秒、1分、2时、3日、4月、5星期、6年]
				let ruleArr = this.$options.propsData.ex.split(' ');
				// 用于记录进入循环的次数
				let nums = 0;
				// 用于暂时存符号时间规则结果的数组
				let resultArr = [];
				// 获取当前时间精确至[年、月、日、时、分、秒]
				let nTime = new Date();
				let nYear = nTime.getFullYear();
				let nMonth = nTime.getMonth() + 1;
				let nDay = nTime.getDate();
				let nHour = nTime.getHours();
				let nMin = nTime.getMinutes();
				let nSecond = nTime.getSeconds();
				// 根据规则获取到近100年可能年数组、月数组等等
				this.getSecondArr(ruleArr[0]);
				this.getMinArr(ruleArr[1]);
				this.getHourArr(ruleArr[2]);
				this.getDayArr(ruleArr[3]);
				this.getMonthArr(ruleArr[4]);
				this.getWeekArr(ruleArr[5]);
				this.getYearArr(ruleArr[6], nYear);
				// 将获取到的数组赋值-方便使用
				let sDate = this.dateArr[0];
				let mDate = this.dateArr[1];
				let hDate = this.dateArr[2];
				let DDate = this.dateArr[3];
				let MDate = this.dateArr[4];
				let YDate = this.dateArr[5];
				// 获取当前时间在数组中的索引
				let sIdx = this.getIndex(sDate, nSecond);
				let mIdx = this.getIndex(mDate, nMin);
				let hIdx = this.getIndex(hDate, nHour);
				let DIdx = this.getIndex(DDate, nDay);
				let MIdx = this.getIndex(MDate, nMonth);
				let YIdx = this.getIndex(YDate, nYear);
				// 重置月日时分秒的函数(后面用的比较多)
				const resetSecond = function() {
					sIdx = 0;
					nSecond = sDate[sIdx]
				}
				const resetMin = function() {
					mIdx = 0;
					nMin = mDate[mIdx]
					resetSecond();
				}
				const resetHour = function() {
					hIdx = 0;
					nHour = hDate[hIdx]
					resetMin();
				}
				const resetDay = function() {
					DIdx = 0;
					nDay = DDate[DIdx]
					resetHour();
				}
				const resetMonth = function() {
					MIdx = 0;
					nMonth = MDate[MIdx]
					resetDay();
				}
				// 如果当前年份不为数组中当前值
				if (nYear !== YDate[YIdx]) {
					resetMonth();
				}
				// 如果当前月份不为数组中当前值
				if (nMonth !== MDate[MIdx]) {
					resetDay();
				}
				// 如果当前“日”不为数组中当前值
				if (nDay !== DDate[DIdx]) {
					resetHour();
				}
				// 如果当前“时”不为数组中当前值
				if (nHour !== hDate[hIdx]) {
					resetMin();
				}
				// 如果当前“分”不为数组中当前值
				if (nMin !== mDate[mIdx]) {
					resetSecond();
				}

				// 循环年份数组
				goYear: for (let Yi = YIdx; Yi < YDate.length; Yi++) {
					let YY = YDate[Yi];
					// 如果到达最大值时
					if (nMonth > MDate[MDate.length - 1]) {
						resetMonth();
						continue;
					}
					// 循环月份数组
					goMonth: for (let Mi = MIdx; Mi < MDate.length; Mi++) {
						// 赋值、方便后面运算
						let MM = MDate[Mi];
						MM = MM < 10 ? '0' + MM : MM;
						// 如果到达最大值时
						if (nDay > DDate[DDate.length - 1]) {
							resetDay();
							if (Mi == MDate.length - 1) {
								resetMonth();
								continue goYear;
							}
							continue;
						}
						// 循环日期数组
						goDay: for (let Di = DIdx; Di < DDate.length; Di++) {
							// 赋值、方便后面运算
							let DD = DDate[Di];
							let thisDD = DD < 10 ? '0' + DD : DD;

							// 如果到达最大值时
							if (nHour > hDate[hDate.length - 1]) {
								resetHour();
								if (Di == DDate.length - 1) {
									resetDay();
									if (Mi == MDate.length - 1) {
										resetMonth();
										continue goYear;
									}
									continue goMonth;
								}
								continue;
							}

							// 判断日期的合法性，不合法的话也是跳出当前循环
							if (this.checkDate(YY + '-' + MM + '-' + thisDD + ' 00:00:00') !== true && this
								.dayRule !== 'workDay' && this.dayRule !== 'lastWeek' && this.dayRule !==
								'lastDay') {
								resetDay();
								continue goMonth;
							}
							// 如果日期规则中有值时
							if (this.dayRule == 'lastDay') {
								// 如果不是合法日期则需要将前将日期调到合法日期即月末最后一天

								if (this.checkDate(YY + '-' + MM + '-' + thisDD + ' 00:00:00') !== true) {
									while (DD > 0 && this.checkDate(YY + '-' + MM + '-' + thisDD +
											' 00:00:00') !== true) {
										DD--;

										thisDD = DD < 10 ? '0' + DD : DD;
									}
								}
							} else if (this.dayRule == 'workDay') {
								// 校验并调整如果是2月30号这种日期传进来时需调整至正常月底
								if (this.checkDate(YY + '-' + MM + '-' + thisDD + ' 00:00:00') !== true) {
									while (DD > 0 && this.checkDate(YY + '-' + MM + '-' + thisDD +
											' 00:00:00') !== true) {
										DD--;
										thisDD = DD < 10 ? '0' + DD : DD;
									}
								}
								// 获取达到条件的日期是星期X
								let thisWeek = this.formatDate(new Date(YY + '-' + MM + '-' + thisDD +
									' 00:00:00'), 'week');
								// 当星期日时
								if (thisWeek == 1) {
									// 先找下一个日，并判断是否为月底
									DD++;
									thisDD = DD < 10 ? '0' + DD : DD;
									// 判断下一日已经不是合法日期
									if (this.checkDate(YY + '-' + MM + '-' + thisDD + ' 00:00:00') !== true) {
										DD -= 3;
									}
								} else if (thisWeek == 7) {
									// 当星期6时只需判断不是1号就可进行操作
									if (this.dayRuleSup !== 1) {
										DD--;
									} else {
										DD += 2;
									}
								}
							} else if (this.dayRule == 'weekDay') {
								// 如果指定了是星期几
								// 获取当前日期是属于星期几
								let thisWeek = this.formatDate(new Date(YY + '-' + MM + '-' + DD +
									' 00:00:00'), 'week');
								// 校验当前星期是否在星期池（dayRuleSup）中
								if (this.dayRuleSup.indexOf(thisWeek) < 0) {
									// 如果到达最大值时
									if (Di == DDate.length - 1) {
										resetDay();
										if (Mi == MDate.length - 1) {
											resetMonth();
											continue goYear;
										}
										continue goMonth;
									}
									continue;
								}
							} else if (this.dayRule == 'assWeek') {
								// 如果指定了是第几周的星期几
								// 获取每月1号是属于星期几
								let thisWeek = this.formatDate(new Date(YY + '-' + MM + '-' + DD +
									' 00:00:00'), 'week');
								if (this.dayRuleSup[1] >= thisWeek) {
									DD = (this.dayRuleSup[0] - 1) * 7 + this.dayRuleSup[1] - thisWeek + 1;
								} else {
									DD = this.dayRuleSup[0] * 7 + this.dayRuleSup[1] - thisWeek + 1;
								}
							} else if (this.dayRule == 'lastWeek') {
								// 如果指定了每月最后一个星期几
								// 校验并调整如果是2月30号这种日期传进来时需调整至正常月底
								if (this.checkDate(YY + '-' + MM + '-' + thisDD + ' 00:00:00') !== true) {
									while (DD > 0 && this.checkDate(YY + '-' + MM + '-' + thisDD +
											' 00:00:00') !== true) {
										DD--;
										thisDD = DD < 10 ? '0' + DD : DD;
									}
								}
								// 获取月末最后一天是星期几
								let thisWeek = this.formatDate(new Date(YY + '-' + MM + '-' + thisDD +
									' 00:00:00'), 'week');
								// 找到要求中最近的那个星期几
								if (this.dayRuleSup < thisWeek) {
									DD -= thisWeek - this.dayRuleSup;
								} else if (this.dayRuleSup > thisWeek) {
									DD -= 7 - (this.dayRuleSup - thisWeek)
								}
							}
							// 判断时间值是否小于10置换成“05”这种格式
							DD = DD < 10 ? '0' + DD : DD;

							// 循环“时”数组
							goHour: for (let hi = hIdx; hi < hDate.length; hi++) {
								let hh = hDate[hi] < 10 ? '0' + hDate[hi] : hDate[hi]

								// 如果到达最大值时
								if (nMin > mDate[mDate.length - 1]) {
									resetMin();
									if (hi == hDate.length - 1) {
										resetHour();
										if (Di == DDate.length - 1) {
											resetDay();
											if (Mi == MDate.length - 1) {
												resetMonth();
												continue goYear;
											}
											continue goMonth;
										}
										continue goDay;
									}
									continue;
								}
								// 循环"分"数组
								goMin: for (let mi = mIdx; mi < mDate.length; mi++) {
									let mm = mDate[mi] < 10 ? '0' + mDate[mi] : mDate[mi];

									// 如果到达最大值时
									if (nSecond > sDate[sDate.length - 1]) {
										resetSecond();
										if (mi == mDate.length - 1) {
											resetMin();
											if (hi == hDate.length - 1) {
												resetHour();
												if (Di == DDate.length - 1) {
													resetDay();
													if (Mi == MDate.length - 1) {
														resetMonth();
														continue goYear;
													}
													continue goMonth;
												}
												continue goDay;
											}
											continue goHour;
										}
										continue;
									}
									// 循环"秒"数组
									goSecond: for (let si = sIdx; si <= sDate.length - 1; si++) {
										let ss = sDate[si] < 10 ? '0' + sDate[si] : sDate[si];
										// 添加当前时间（时间合法性在日期循环时已经判断）
										if (MM !== '00' && DD !== '00') {
											resultArr.push(YY + '-' + MM + '-' + DD + ' ' + hh +
												':' + mm + ':' + ss)
											nums++;
										}
										// 如果条数满了就退出循环
										if (nums == 5) break goYear;
										// 如果到达最大值时
										if (si == sDate.length - 1) {
											resetSecond();
											if (mi == mDate.length - 1) {
												resetMin();
												if (hi == hDate.length - 1) {
													resetHour();
													if (Di == DDate.length - 1) {
														resetDay();
														if (Mi == MDate.length - 1) {
															resetMonth();
															continue goYear;
														}
														continue goMonth;
													}
													continue goDay;
												}
												continue goHour;
											}
											continue goMin;
										}
									} //goSecond
								} //goMin
							} //goHour
						} //goDay
					} //goMonth
				}
				// 判断100年内的结果条数
				if (resultArr.length == 0) {
					this.resultList = [this.$tt('cron.result.893023-2')];
				} else {
					this.resultList = resultArr;
					if (resultArr.length !== 5) {
						this.resultList.push(this.$tt('cron.result.893023-3') + resultArr.length + this.$tt(
							'cron.result.893023-4'))
					}
				}
				// 计算完成-显示结果
				this.isShow = true;


			},
			// 用于计算某位数字在数组中的索引
			getIndex(arr, value) {
				if (value <= arr[0] || value > arr[arr.length - 1]) {
					return 0;
				} else {
					for (let i = 0; i < arr.length - 1; i++) {
						if (value > arr[i] && value <= arr[i + 1]) {
							return i + 1;
						}
					}
				}
			},
			// 获取"年"数组
			getYearArr(rule, year) {
				this.dateArr[5] = this.getOrderArr(year, year + 100);
				if (rule !== undefined) {
					if (rule.indexOf('-') >= 0) {
						this.dateArr[5] = this.getCycleArr(rule, year + 100, false)
					} else if (rule.indexOf('/') >= 0) {
						this.dateArr[5] = this.getAverageArr(rule, year + 100)
					} else if (rule !== '*') {
						this.dateArr[5] = this.getAssignArr(rule)
					}
				}
			},
			// 获取"月"数组
			getMonthArr(rule) {
				this.dateArr[4] = this.getOrderArr(1, 12);
				if (rule.indexOf('-') >= 0) {
					this.dateArr[4] = this.getCycleArr(rule, 12, false)
				} else if (rule.indexOf('/') >= 0) {
					this.dateArr[4] = this.getAverageArr(rule, 12)
				} else if (rule !== '*') {
					this.dateArr[4] = this.getAssignArr(rule)
				}
			},
			// 获取"日"数组-主要为日期规则
			getWeekArr(rule) {
				// 只有当日期规则的两个值均为“”时则表达日期是有选项的
				if (this.dayRule == '' && this.dayRuleSup == '') {
					if (rule.indexOf('-') >= 0) {
						this.dayRule = 'weekDay';
						this.dayRuleSup = this.getCycleArr(rule, 7, false)
					} else if (rule.indexOf('#') >= 0) {
						this.dayRule = 'assWeek';
						let matchRule = rule.match(/[0-9]{1}/g);
						this.dayRuleSup = [Number(matchRule[1]), Number(matchRule[0])];
						this.dateArr[3] = [1];
						if (this.dayRuleSup[1] == 7) {
							this.dayRuleSup[1] = 0;
						}
					} else if (rule.indexOf('L') >= 0) {
						this.dayRule = 'lastWeek';
						this.dayRuleSup = Number(rule.match(/[0-9]{1,2}/g)[0]);
						this.dateArr[3] = [31];
						if (this.dayRuleSup == 7) {
							this.dayRuleSup = 0;
						}
					} else if (rule !== '*' && rule !== '?') {
						this.dayRule = 'weekDay';
						this.dayRuleSup = this.getAssignArr(rule)
					}
				}
			},
			// 获取"日"数组-少量为日期规则
			getDayArr(rule) {
				this.dateArr[3] = this.getOrderArr(1, 31);
				this.dayRule = '';
				this.dayRuleSup = '';
				if (rule.indexOf('-') >= 0) {
					this.dateArr[3] = this.getCycleArr(rule, 31, false)
					this.dayRuleSup = 'null';
				} else if (rule.indexOf('/') >= 0) {
					this.dateArr[3] = this.getAverageArr(rule, 31)
					this.dayRuleSup = 'null';
				} else if (rule.indexOf('W') >= 0) {
					this.dayRule = 'workDay';
					this.dayRuleSup = Number(rule.match(/[0-9]{1,2}/g)[0]);
					this.dateArr[3] = [this.dayRuleSup];
				} else if (rule.indexOf('L') >= 0) {
					this.dayRule = 'lastDay';
					this.dayRuleSup = 'null';
					this.dateArr[3] = [31];
				} else if (rule !== '*' && rule !== '?') {
					this.dateArr[3] = this.getAssignArr(rule)
					this.dayRuleSup = 'null';
				} else if (rule == '*') {
					this.dayRuleSup = 'null';
				}
			},
			// 获取"时"数组
			getHourArr(rule) {
				this.dateArr[2] = this.getOrderArr(0, 23);
				if (rule.indexOf('-') >= 0) {
					this.dateArr[2] = this.getCycleArr(rule, 24, true)
				} else if (rule.indexOf('/') >= 0) {
					this.dateArr[2] = this.getAverageArr(rule, 23)
				} else if (rule !== '*') {
					this.dateArr[2] = this.getAssignArr(rule)
				}
			},
			// 获取"分"数组
			getMinArr(rule) {
				this.dateArr[1] = this.getOrderArr(0, 59);
				if (rule.indexOf('-') >= 0) {
					this.dateArr[1] = this.getCycleArr(rule, 60, true)
				} else if (rule.indexOf('/') >= 0) {
					this.dateArr[1] = this.getAverageArr(rule, 59)
				} else if (rule !== '*') {
					this.dateArr[1] = this.getAssignArr(rule)
				}
			},
			// 获取"秒"数组
			getSecondArr(rule) {
				this.dateArr[0] = this.getOrderArr(0, 59);
				if (rule.indexOf('-') >= 0) {
					this.dateArr[0] = this.getCycleArr(rule, 60, true)
				} else if (rule.indexOf('/') >= 0) {
					this.dateArr[0] = this.getAverageArr(rule, 59)
				} else if (rule !== '*') {
					this.dateArr[0] = this.getAssignArr(rule)
				}
			},
			// 根据传进来的min-max返回一个顺序的数组
			getOrderArr(min, max) {
				let arr = [];
				for (let i = min; i <= max; i++) {
					arr.push(i);
				}
				return arr;
			},
			// 根据规则中指定的零散值返回一个数组
			getAssignArr(rule) {
				let arr = [];
				let assiginArr = rule.split(',');
				for (let i = 0; i < assiginArr.length; i++) {
					arr[i] = Number(assiginArr[i])
				}
				arr.sort(this.compare)
				return arr;
			},
			// 根据一定算术规则计算返回一个数组
			getAverageArr(rule, limit) {
				let arr = [];
				let agArr = rule.split('/');
				let min = Number(agArr[0]);
				let step = Number(agArr[1]);
				while (min <= limit) {
					arr.push(min);
					min += step;
				}
				return arr;
			},
			// 根据规则返回一个具有周期性的数组
			getCycleArr(rule, limit, status) {
				// status--表示是否从0开始（则从1开始）
				let arr = [];
				let cycleArr = rule.split('-');
				let min = Number(cycleArr[0]);
				let max = Number(cycleArr[1]);
				if (min > max) {
					max += limit;
				}
				for (let i = min; i <= max; i++) {
					let add = 0;
					if (status == false && i % limit == 0) {
						add = limit;
					}
					arr.push(Math.round(i % limit + add))
				}
				arr.sort(this.compare)
				return arr;
			},
			// 比较数字大小（用于Array.sort）
			compare(value1, value2) {
				if (value2 - value1 > 0) {
					return -1;
				} else {
					return 1;
				}
			},
			// 格式化日期格式如：2017-9-19 18:04:33
			formatDate(value, type) {
				// 计算日期相关值
				let time = typeof value == 'number' ? new Date(value) : value;
				let Y = time.getFullYear();
				let M = time.getMonth() + 1;
				let D = time.getDate();
				let h = time.getHours();
				let m = time.getMinutes();
				let s = time.getSeconds();
				let week = time.getDay();
				// 如果传递了type的话
				if (type == undefined) {
					return Y + '-' + (M < 10 ? '0' + M : M) + '-' + (D < 10 ? '0' + D : D) + ' ' + (h < 10 ? '0' + h : h) +
						':' + (m < 10 ? '0' + m : m) + ':' + (s < 10 ? '0' + s : s);
				} else if (type == 'week') {
					// 在quartz中 1为星期日
					return week + 1;
				}
			},
			// 检查日期是否存在
			checkDate(value) {
				let time = new Date(value);
				let format = this.formatDate(time)
				return value === format;
			}
		},
	
	}
</script>